Topic
Magnetic circuit
About: Magnetic circuit is a research topic. Over the lifetime, 15707 publications have been published within this topic receiving 118099 citations.
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TL;DR: In this paper, a computer design package was developed in order to investigate the best way to obtain these goals, by reducing the stator core length by 40%, the frequency regulation and the voltage drop were reduced.
Abstract: The main goals in the design of a self-excited induction generator (SEIG) are minimizing the rotor resistance and increasing the flux density until the magnetic circuit of the generator saturates. In this paper, a computer design package was developed in order to investigate the best way to obtain these goals. By reducing the stator core length by 40%, the frequency regulation and the voltage drop were reduced. The frequency regulation decreased from 10% to 4% and the voltage drop decreased from 30% to 6%. In addition, voltage and frequency regulations in the standard ranges were obtained in the present design without any regulation devices. >
35 citations
Patent•
17 Jul 1975TL;DR: In this article, the magnetic circuit of dynamoelectric machines having superconductive field or excitation windings is utilized. But the main field is wound about a smooth rotor.
Abstract: Iron or other ferromagnetic material is utilized in the magnetic circuit of dynamoelectric machines having superconductive field or excitation windings. In DC machines, a stationary salient pole field structure with a superconductive main field winding is utilized. An armature winding is wound about a smooth rotor. In AC machines, a ferromagnetic structure that encloses and rotates with a superconductive excitation winding is utilized. The ferromagnetic structure may include either salient poles interconnected by ferromagnetic shunts or a slotted or toothed rotor.
35 citations
TL;DR: In this paper, a contact-free planar actuator based on magnetic forces, magnetized force and Lorentz force was proposed for the precision stage using a novel contact free actuator.
35 citations
Patent•
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26 Jul 2013
TL;DR: In this article, a rotor with permanent magnets arranged on the rotor in the form of a series of concentric arrangement with opposing like poles, and a stator with inductor cores placed thereon U-shaped and the windings, each of which comprises two identical sections disposed in side portions n-shaped cores and interconnected in series and in accordance with.
Abstract: The invention relates to the field of alternative energy and can be used in wind power plants. The electrical machine comprises a rotor with permanent magnets arranged on the rotor in the form of a series of concentric arrangement with opposing like poles, and a stator with inductor cores placed thereon U-shaped and the windings, each of which comprises two identical sections disposed in side portions n- shaped cores and interconnected in series and in accordance with. The diversity in space magnetic fluxes of the permanent magnets on the symmetrical branches of the closed magnetic circuit is achieved by lowering the degree of influence of the armature reaction and improving the efficiency of utility model
35 citations
TL;DR: In this paper, a new analysis method for air core permanent-magnet synchronous linear motor design optimization problems with a large search space is presented. The aim is to reduce the total computational time by replacing most of the finite-element analysis (FEA) steps with an analytical model of the motor consisting of nonlinear equivalent magnetic circuit and flux density distribution models.
Abstract: This paper presents a new analysis method for air core permanent-magnet synchronous linear motor design optimization problems with a large search space. The aim is to reduce the total computational time by replacing most of the finite-element analysis (FEA) steps with an analytical model of the motor consisting of nonlinear equivalent magnetic circuit and flux density distribution models. A small number of FEA steps are used to determine some parameters of the analytical model. The result of the proposed method is compared with results of both a pure FEA design and experiments on a real motor. The proposed method has similar performance to FEA, although computationally it is at least two orders of magnitude faster.
35 citations